>> i would say, as intelligent as great apes or dolphins. >> rebecca is a curator at smithsonian'sat washington and feels that ravens, like iris and showgun get a bad rap. >> raven has a big brain? >> big brain, relative to their size. use it to think for things. solve puzzles. use tight communicate with each other. to, you know assess what is going on in their environment. >> and into their environment is where we went. >> so in we go. >> in we go. >> they're waiting for us. >> oh, my god. >> no ladders either. >> reporter: ravens are crafty. hiding food. manipulating a string to eat a mouse. >> now that he can reach it. pull it out and eat it. >> iris even know house to paint. >>> that's good. again. that's good. >> some can mimic human voice. >> hello. >> hi. >> hi. >> often confused with crows, ravens are larger, have a wedge-shaped tail with a low, we see them in the wild. in captivity and in popular culture. alfred hitchcock's the birds. in game of thrones, comic books and folklore. why do we associate them with evil. >> deep black of feathers. eyes always seem like they're wat